Important classifications of flue gas desulfurization (FGD) processes that have been tested on coal-fired boilers are shown in Figure 2-1. A major distinction is generally made between recovery processes, which recover S02 in useful forms such as sulfuric acid or elemental sulfur, and throwaway processes, which produce a solid or liquid waste.
ABSTRACT The repOrf. describes flue gas desulfurization (FGD) systems and the design and operating parameters that are monitored to ensure proper operation. It explains how these parameters are varied to accommodate changing boiler loads and fuel char- acteristics, and describes the control of parameters to prevent such problems as scale buildup.
Air Pollution Control Technology Fact Sheet
The unique flue gas dispersion system of the B&W SDA, coupled with the rotary atomizer, ensures a uniform distribution of slurry and provides for intimate contact with the flue gas to optimize absorption efficiency and drying in the spray chamber. For large utility boiler applications (illus-
A wet flue gas desulfurizatio (FGD) system for boiler of capacity 300 kg/hr was investigated in this paper. It is a set of technologies used to remove sulphur dioxide from exhaust flue gases coming from fossil fuel power plants and from
Flue Gas Desulfurization Systems: Design and Operating An FGD system design goal is to achieve a specified S02 removal efficiency for the most severe operating conditions anticipated such as maximum boiler load (equivalent to maxi- mum gas volume to be treated) and maximum sulfur content of the to be burned (equivalent to maximum SC>2 concentration in the ).
design for boiler operations. The major coal properties affecting FGD system design and operation are (Leivo 1978): Heating value of coal - Affects flue gas flow rate. Flow rate is generally higher for lower heating value coals, which also contribute a greater water-vapor content to the flue gas.